thandClaude Opus 4.7
fcfd21428d
- New frame-by-frame export pipeline in src/lib/frameExport.ts: loads scene images, walks rangeIn..rangeOut at scene.fps, drawSceneFrame to an offscreen canvas, awaits a per-frame callback, yields every 4 frames to keep progress responsive, honours AbortSignal. - Animated GIF via gifenc (per-frame quantize/palette, ~5 KB lib). - Animated PNG via UPNG.js + pako (lossless RGBA, alpha-aware, ~30 KB). - drawSceneFrame now clearRects first and skips the background fill when scene.canvas.background === 'transparent' — prerequisite for the alpha to reach the APNG output. - DocumentDrawer: new checkerboard toggle next to the colour picker flips the stage between its last-picked colour and transparent; disabled swatch + 'Transparent' hex label make the state obvious. - ExportDialog: three new option rows — Animated GIF, Animated PNG, and an APNG preview page that bundles the rendered APNG into a standalone HTML with a checkerboard backdrop + dark/light toggles for verifying transparency at a glance. - Tests: renderFrames frame count + abort, GIF header magic, APNG acTL presence, transparent round-trip (decoded alpha == 0 on un-painted pixels), preview HTML structure, and the two UI tests covering ExportDialog's new rows and the progress-view transition. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>